as always this is an interesting post ! My quilting group is making a raffel quilt to be "sold for charitible reasons". In the cpyright wording in the front of the book the designer stated " this quilt may be made for charitible donations. Must have design cresit written on the label" In this case we did not ave to get permission to make this quilt as a raffel quilt .
Also ICLANG- do you buy a pattern with the intent of making the quilt for resale? IMHO- personal use is for your own use or to be given as gifts not to be made for resale. If you want to make it to sell then get permission from the designer.